Iron-based biochar prepared from inert organic components of kitchen garbage as well as preparation method and application of iron-based biochar

The invention relates to biochar prepared from inert organic components of kitchen garbage, which is obtained by the following steps: A, cleaning, drying and crushing the inert organic components of the kitchen garbage, and sieving to obtain inert organic particles; b, inert organic particles and nano-iron are mixed in distilled water and then subjected to water bath heating, after the water bath temperature reaches 85-95 DEG C, ammonia water is added for stirring, then cleaning, drying and sieving are conducted, and a modified inert unit component is obtained; and C, carrying out high-temperature pyrolysis on the modified inert organic component in an atmosphere pyrolysis furnace in which nitrogen is introduced, cooling to room temperature, grinding and sieving to obtain the iron-based biochar. The invention also discloses a preparation method and application of the compound. The iron-based biochar is added into a kitchen waste organic slurry wet anaerobic fermentation reaction system, so that the delay phas